50 POINTS!!!

Mathematics

2 answers:

barxatty [35]4 years ago

7 0

Answer:

18 pi ^2

I had a similar explanation to the one below. I believe that is the most simple way to come up with a answer.

Fittoniya [83]4 years ago

4 0

Answer:

18 π cm^2.

Step-by-step explanation:

The area of the whole circle = π r^2 = 81π cm^2.

Since there are 360 degrees in a circle the area of the shaded region =

80/360 * area of the circle.

This = 80/360 * 81 π

= 2/9 * 81 π

= 18 π

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9/10

SIZIF [17.4K]

Answer: 90%

Step-by-step explanation: To write a fraction as a percent, first remember that a percent is a ratio of a number to 100.

So to write 9/10 as a percent, we need to find a fraction

equivalent to 9/10 that has a 100 in the denominator.

We can do this by setting up a proportion.

So we have $\frac{9}{10} = \frac{n}{100}$ .

Now, we can use cross-products to find the missing value.

So we have (9)(100) which is 900 is equal to (10)(n) or 10n.

So we have 900 = 10n.

Next, dividing both sides of the equation by 10, we have 90 = n.

So, 9/10 is equal to 90/100 or 90%.

7 0

3 years ago

Please help me with this!

allochka39001 [22]

Function 1 has a maximum at y = 1
Now we need to find the maximum of Function 2 by completing the square:
-x^2 + 2x - 3
= -(x^2 - 2x) - 3
= -(x - 1)^2 +1 - 3
= -(x - 1)^2 - 2
Therefor the turning point is at (1, -2) and the maximum is at y = -2

-2 < 1, therefor Function 1 has the larger maximum

8 0

3 years ago

Please.... help answer choices: right, acute, obtuse, scalene

Sergio [31]

Answer:

right angle

Step-by-step explanation:

It has a 90 degrees angle

5 0

3 years ago

Read 2 more answers

X = 9 7 4 LOOK AT IMAGE